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TPS63700: Internal pull-down of EN pin

Yuto Sakai
Mastermind 6100 points
Part Number: TPS63700

Hi,

Is there a pull-down resistor inside the EN pin?
If yes, what value is connected?
Since it is not a guaranteed value, there is no problem, please give me a view.

Best Regards,
Yuto Sakai

  • 0
    TI__Guru**** 150650 points
    Hi Sakai-san,

    No, there is no internal pull-down. EN must be terminated.

    What Vin, Vout, and Iout do you need? We have never devices that might be a better fit.
  • 0 in reply to Chris Glaser
    Mastermind 6100 points
    Hi Chris-san,

    Our customers are trying to construct an overvoltage detection circuit using NPN transistors.
    Prepare a 10 kΩ resistor between the VIN and ENA pins and connect to the collector.
    The emitter is GND. When an overvoltage is detected, a voltage is applied to the base, the transistor turns on and the ENA pin falls to Low.

    Vin, Vout and Iout are not clearly defined, but are there concerns about these configurations? EVM uses a pull-down configuration that fixes the ENA pin to the low level by using 100 kΩ, but does the ENA pin need to be fixed low when the power supply is not turned on?

    Best Regards,
    Yuto Sakai
  • 0 in reply to Yuto Sakai
    TI__Guru**** 150650 points
    Hi Sakai-san,

    Yes, this is ok. Please observe the abs max rating on EN, which prohibits it from being above Vin.